EN
| Place of Origin | Zhejiang,China |
| Model | F21-4S |
| Material | Glass-Fiber PA |
| Protection level | IP65 |
| Frequency range | VHF:310-331 MHz;UHF:425-446 MHz(optional) |
| Temperature range | -40℃～ 85℃ |
| Controlling distance | Approx100m(200 meters is customized) |
| Receiver power supply optional | AC/DC 12V;18～65V;65～440V (optional) |
| Output contactor capacity | 8A sealed relay output |
